replace invalid characters combinations

lib/single-file/single-file-core.js

@@ -447,7 +447,7 @@ this.SingleFileCore = this.SingleFileCore || (() => {
 			}
 			let filename = await ProcessorHelper.evalTemplate(this.options.filenameTemplate, this.options, content) || "";
 			filename = filename.replace(/[~\\?%*:|"<>\x00-\x1f\x7F]+/g, "_"); // eslint-disable-line no-control-regex
-			filename = filename.replace(/\.\.\//g, "").replace(/^\/+/, "").replace(/\/+/g, "/").replace(/\/$/, "");
+			filename = filename.replace(/\.\.\//g, "").replace(/^\/+/, "").replace(/\/+/g, "/").replace(/\/$/, "").replace(/\.$/, "").replace(/\.\//g, "._").replace(/\/\./g, "/_");
 			if (!this.options.backgroundSave) {
 				filename = filename.replace(/\//g, "_");
 			}